<p>The dimpled tip treatment has been proven effective in suppressing propeller tip vortex cavitation (TVC) while incurring minimal performance loss. Building on this foundation, the present study further investigates the impact of dimpled tip treatment on the wake characteristics of a propeller, focusing on the evolution of the tip vortex from the near-field to the far-field regions. Using the improved delayed detached eddy simulation method on an unstructured grid with approximately 50 million cells, the research examines the effects and mechanisms of dimpled surfaces on tip vortex evolution by analyzing vortex structure, turbulent kinetic energy distribution, and spectral characteristics. The results demonstrate that the dimpled tip treatment accelerates the breakdown and turbulent transition of the coherent tip vortex structure. This study highlights that following the dimpled tip treatment, the tip vortex exhibits a reduced pitch and strongly interacts with the induced vortex in the near-field region, thereby advancing and enhancing the mutual inductance process and ultimately leading to its early destabilization. This instability mechanism is strongly dependent on the advance coefficient, becoming more pronounced at lower advance coefficients and progressively weakening as the advance coefficient increases. These findings further enrich the theoretical framework of dimpled tip treatment for suppressing TVC.</p>